Apparatus, system, and method for providing node protection across label-switched paths that share labels
US10476811B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2017 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Jan 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/724
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The disclosed computer-implemented method may include (1) receiving, at a network node within a network, a packet from another network node within the network, (2) identifying, within the packet, a label stack that includes a plurality of labels that collectively represent at least a portion of a label-switched path within the network, (3) popping, from the label stack, a label that corresponds to a next hop of the network node, (4) determining, based at least in part on the label, that the next hop has experienced a failure that prevents the packet from reaching a destination via the next hop, (5) identifying a backup path that merges with the label-switched path at a next-to-next hop included in the label-switched path, and then (6) forwarding the packet to the next-to-next hop via the backup path. Various other methods, systems, and apparatuses are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.